.bg_bottom{
    background: #ffcb00;
    width: 100%;
    height: 30px;
    position: fixed;
    bottom: 0;
      .bottom{ 
          width: 1200px;
          margin-left: 100px;
          font-size: 14px;
         li{float: left;
            line-height: 30px;
            height: 30px;
            img{vertical-align:middle;}
           &:first-child{
            width: 530px;
            font-size: 12px;
            overflow: hidden;
            position: relative;
            margin-right: 26px;
            div{
                width: 1000px;
                position: absolute;
                left:1000px;
            }
        }
          span{margin-right: 50px;
               img{margin-right: 10px;}}
        } 
      }}